关键词: 黑颈长尾雉, 夜栖地, 金钟山, 季节

Abstract: [Objective] Our objective is to analyze characteristics and differences of roost habitat of Mrs Hume's Pheasant in Spring and Summer.[Method] In a field survey from February to August 2012, 46 night roost sites were detected, and the divergence of roost trees was not statistically significant different between spring and summer (χ²=0.34, P=0.51), and Tungoil tree (Vernicia fordii) was the first choice of Mrs Hume's pheasant in night; Pearson correlation analysis was used to analyze the Correlation coefficient of roost tree number and arbor number in plots, the result indicated that there was a low correlation (r=0.401, P=0.028) between them, in other words, that Mrs Hume's Pheasant selected trees to roost was a trade-off from its survival ambience.[Result] The roosting variations of Mrs Hume's Pheasant in spring and summer was analyzed by Independence sample T tested or Mann-Whitney U tested, the result indicated:there were significant (P<0.05) differences in Shrub coverage, Diameter at breast, Upper cover of roost branch, Height of roost branch. Principal Component Analysis (PCA) was used to discriminate which variables to determine the roost sites selection in different seasons. Our result showed that the perch factors, geographic and interference factors played an important role in roost selection in summer; the perch and safety factors played a significant role in roost choice in spring.[Conclusion] The results support the view point that roost habitats may prevent a negative energy budget and reduce predation risk, demonstrating that the factors influencing the selection of a roost site are compound and different in alternate season.

Key words: Mrs Hume's Pheasant, roost habitat, Jinzhongshan, season